2022 Silverado RST Z71 5.3L has DFM?

SquireSCA · January 14, 2022

I have a 2019 LT TrailBoss and I put the Range box in it to disable DFM... My wife just picked up a new 2022 RST Z71 with the 5.3L and I am wondering if hers has DFM, and if I should disable that to help avoid lifter issues...

I am reading that due to chip shortages, some trucks don't have DFM enabled... How do I determine if her truck is one of those?

Edited January 14, 2022 by SquireSCA

Matty Patty · January 14, 2022

The dealership should have that information for you. And I believe if DFM had been disabled G.M. will credit you $50 dollar's off/credit from the price of the vehicle. See link below

https://gmauthority.com/blog/2021/03/gm-to-offer-50-credit-on-chevy-silverado-and-gmc-sierra-without-afm-dfm/

WeGone · January 14, 2022

Good read I think you may find your answer here

shanemoon · January 14, 2022

1 hour ago, SquireSCA said:

I have a 2019 LT TrailBoss and I put the Range box in it to disable DFM... My wife just picked up a new 2022 RST Z71 with the 5.3L and I am wondering if hers has DFM, and if I should disable that to help avoid lifter issues...

I am reading that due to chip shortages, some trucks don't have DFM enabled... How do I determine if her truck is one of those?

It will have a YK9 RPO code is DFM is deleted. It should also say "DFM Disabled" or something similar on the window sticker. Otherwise, it still has it.

Regardless of what other people say, you will almost certainly be fine keeping DFM enabled. The percentage of lifter issues compared to total vehicles sold with this engine is somewhere in the realm of 0.1-0.5%. You're more likely to completely total the car in an accident versus having lifter issues. The internet can sometimes (most times) makes things seem way worse than it is.

Edited January 14, 2022 by shanemoon

reeseb · January 14, 2022

Your dealer can email the build sheet to you.

SquireSCA · January 14, 2022

Just now, shanemoon said:

It will have a YK9 RPO code is DFM is deleted. Otherwise, it still had it.

Regardless of what other people say, you will almost certainly be fine keeping DFM enabled. The percentage of lifter issues compared to total vehicles sold with this engine is somewhere in the realm of 0.1-0.5%. You're more likely to completely total the car in an accident versus having lifter issues. The internet can sometimes (most times) makes things seem way worse than it is.

Where would I find that code?

reeseb · January 14, 2022

1 minute ago, shanemoon said:

It will have a YK9 RPO code is DFM is deleted. Otherwise, it still had it.

Regardless of what other people say, you will almost certainly be fine keeping DFM enabled. The percentage of lifter issues compared to total vehicles sold with this engine is somewhere in the realm of 0.1-0.5%. You're more likely to completely total the car in an accident versus having lifter issues. The internet can sometimes (most times) makes things seem way worse than it is.

shanemoon · January 14, 2022

1 minute ago, SquireSCA said:

Where would I find that code?

RPO codes can be found in your glove box. There is a QR code. Scan it with your phone and copy it to a notes app or something. It will list out all your vehicles optioned codes.

SquireSCA · January 14, 2022

2 minutes ago, shanemoon said:

RPO codes can be found in your glove box. There is a QR code. Scan it with your phone and copy it to a notes app or something. It will list out all your vehicles optioned codes.

Sweet! I will do that this afternoon. Thanks.

Flatus · January 14, 2022

Just look at the upper right corner of window sticker. It will state either 5.3 with DFM or 5.3 w/o DFM.

newdude · January 14, 2022

40 minutes ago, SquireSCA said:

Where would I find that code?

38 minutes ago, shanemoon said:

RPO codes can be found in your glove box. There is a QR code. Scan it with your phone and copy it to a notes app or something. It will list out all your vehicles optioned codes.

NOT in the glovebox. The QR is in the driver's door jamb.